Improvement in centrifugal machines for draining sugar



ELMENHORST & MATTHIESSEN.

Sugar Machine.

Patented April 21, 1868.

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WALTER ELMENHORST AND FRANZ 0.,MATTHIESSEN, OF JERSEY CITY,

NEWVJERSEY.

. LettersPatent No. 77,017, dated April 21, 1868.

IMPROVEMENT IN GENTRIFUGAL MACHINES FOR DRAINING scene. 7

TU ALL WHOM IT MAY CONCERN 1 Be it'known that we, WALTER Emmivn'onsr and FRANZ 0. Mn'rrnmssnmboth oi Jersey City, in the county of- Hudson, and State of New Jersey,have'inventeda new and useful Improvement in'Oentrifugal Sugar Machines, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawing, forming part of this specification, and in which- Figure 1 represents a sectional elevation of a centrifugal sugar-apparatus having our improvement applied to it, Y

Figure 2 a plan of the same, and I Figure 3 a horizontal section taken as indicated by'the line at a: in fig. 1. Similar letters of reference indicate corresponding parts. I This our improvement has reference tothat description of centrifugal sugar-machines commonly knowna-as the German machine, and which employ what is ternied a rubber-bearing for steadyingand easing-the run of the screening or purging-cylinder and dispense with that costly and solid foundation which is a necessary element or adjunct to other machines 'ot a difierent character, as regards their support or run, and that employ; fixed bearings.

Tothese lighter and'cheaper-hung or supported German. machines, however, there has heretofore been a serious objection, due to-tliewabhlings or vacillations of the revolving cylinder, as it approximatesa given velocity, and which isapt to scatter the sugar,fprovided the machine be charged while standing; consequently .it is customary not to charge the semetillacertain velocity has been acquired by the cylinder; but in purging the lower grades ofsugar, that are generallymore or less smeary, it makes considerable difl'erence, as regards dry purging, whether the machine is charged while standing, andthen set in motion, or filled whilst in rapidrotation. Ohargingbefore starting will invariablyv give a better result, but, as 'hereinbeforef stated, this is not practicable with safety in machines not running ;infixed "bearings, but supported or steadied by rubber ones, and in the case of thin stufi or lower grades of sugar, is seldom or never practised, but. the machine almost invariably first set in motion, and when in full and rapid rotations feeding in the charge, thereby avoiding those excessive wabbling motions, but producing an inferior or less thoroughly purged sugar. Our invention has for its'o'bject the charging of such machines while standing, without subjecting thenrte such'objectionable. andviolent wabbling-motions that cause the charge to be thrown around, and if not stopped in time, increase so as to become destructive to the machine, and, by scattering the sugar, dangerous to the attendants or bystanders. These violent wabbling movements usually occurwhen the machine is running ata velocity of from three hundred to five hundred revolutions per minute, but, at a higher speed, cease; that is, when a slceping'or top-spinning velocity has been acquired. I I

Qur invention inthis connection, therefore, consists in providing thevertical shaft of the-screening or urging-cylinder with a temporarily-acting tie or brace, capable of being shipped or unshipped from its action on the shaft as a hearing or steadying support while the 'machine is running, and whereby said cylinder is steadied in its run, till reaching or rather passing the velocity at which the excessive vacillations occur, when,- without stopping the machine, said additional support or bearing is thrown o'fi or disconnected from the shaft so as toleave the cylinder with its charge free to spin at the higher velocity acquired without restraining it from those moderate vacillations that are so advantageous in thoroughly purging the sugar, and that takeplace --during the spinning or sleeping run of the cylinder, when not restrained-by fixed bearings.

In view of the preceding observations, the following succinct description will sufice to explain how 'oui invention is or may be carried into practice A, in the accompanying-drawing, representing the screening or purging-cylinder; 3, its vertical shaft, and O the outer or surrounding case. D is the step for the lower end of the shaft B to turn in and rest upon, and

E the usual steadying-socket, carried by rubber bands or strips E E, and, in connection with the socket, form= ing what is known as a rubber hearing. The requisite rotary motion may be given to the shaft B and purgingcylinder A,-by pulleys b b and belt or band a. To steady the run of the cylinder A till after the velocity at which the excessive wabbling movement occurs has been passed, without restraining subsequent vaeillations, and whereby the machine may be charged in advance of starting to run it, and lower grades of sugar be purged in a dry or thorough manner, we, as hereinbefore referred to, apply a temporary brace or tie to the shaft B, say, for instance, a brace, F, hinged as at e, and formed with an eye, d, to form a bearing for the shaft B, until a sleeping or spinning velocity has been communicated to the charged cylinder A, or till such time as its violent wabbling movement has been the cylinder left free to gently vacillate andaid in the purging of the sugar. Thus, in fig. 1, the brace or bearing Eis shown in black lines as down or in gear with the shaft 13, and as unshipped or thrown back in red lines. I

What is here claimed, and desired to be secured by Letters Patent, is In a'centrifugal machine of the character deseribed,-an-d having no upper fixed bearing, the combination, with the purging-cylinder A and rubber or elastic bearing to the shaft B, of a removable or adjustable bearingbrace or tie to said shaft, so hung or arranged as that it may readily be thrown in or out of stcadying support or purposes herein set forth W. ELMENHORST, FLO MATTHIESSEN.

.to the cylinder while the machine is in motion, essentially as and for the purpose Witnesses:

HENRY,T. Bnown, J. W. Occurs.

overcome, when said brace may be thrown back or un'shipped from the shaft, and 

